Error in Curl adapter used Solarium - Solr with php 7

I use Sorl in version 5.4, perfectly working Solr's own interface.

I installed Solarium to make application development easier. However, when testing the examples following the initial guidelines I get the following error:

  Fatal error: Uncaught Solarium\Exception\HttpException: Solr HTTP 
  error: HTTP request failed, Connection timed out after 5001 milliseconds in solarium/library/Solarium/Core/Client/Adapter/Curl.php:195 Stack trace: #0
  solarium/library/Solarium/Core/Client/Adapter/Curl.php(92): Solarium\Core\Client\Adapter\Curl->check('', Array, Resource id #37) #1 
  solarium/library/Solarium/Core/Client/Adapter/Curl.php(213): Solarium\Core\Client\Adapter\Curl->getResponse(Resource id #37, false) #2 
  solarium/library/Solarium/Core/Client/Adapter/Curl.php(68): Solarium\Core\Client\Adapter\Curl->getData(Object(Solarium\Core\Client\Request), Object(Solarium\Core\Client\Endpoint)) #3 
  solarium/library/Solarium/Core/Client/Client.php(804): Solarium\Core\Client\Adapter\Curl->execute(Object(Solarium\Core\Client\Request), Object(Solariu in solarium/library/Solarium/Core/Client/Adapter/Curl.php on line 195

I have installed php7, libcurl, php-curl (php70w-common) as per instructions found in Webtatic .

Has anyone ever had this problem?

Thank you!